|
|
|
| Registros recuperados: 98.244 | |
|
| |
|
|
| Ribeiro,Wellington S; Carneiro,Clebson dos S; França,Christiane de Fátima M; Pinto,Cleide Maria F; Lima,Paula Cristina C; Finger,Fernando L. |
| ABSTRACT 1-MCP has been effectively used as an antagonist of ethylene deleterious actions in flowers and ornamental plants. The objective was to evaluate the efficiency of 1-MCP (0.0, 0.5, 1.0 and 1.5 g m-3) in maintaining post-production quality of exogenous ethylene sensitive ornamental pepper. Two commercial varieties were evaluated: Pimenta Colorida and Pimentão Ornamental, both Capsicum annuum. The pre-treatment with 1-MCP, regardless of the applied concentration, was effective in blocking the ethylene action reducing the leaves abscission, flowers and fruits of both genotypes by 100%. Plants pretreated with 1-MCP had postproduction life increased by eight and nine days for Pimenta Colorida and Pimentão Ornamental, respectively. The 1-MCP application... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum annuum; Ornamental plants; Sensitivity; Transport. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000400510 |
| |
|
|
| Campos,Raquel Pires; Knoch,Beatriz; Hiane,Priscila Aiko; Ramos,Maria Isabel Lima; Ramos Filho,Manoel Mendes. |
| A mangaba, fruto nativo altamente perecível, apresenta reduzida vida útil pós-colheita. Novas tecnologias de conservação de frutos têm sido desenvolvidas, e o uso de reguladores vegetais tem sido promissor. Este trabalho avaliou a aplicação do regulador de etileno1-MCP em diferentes concentrações (250; 500 e 1.000 ηL L-1), com o objetivo de verificar o prolongamento da vida útil dos frutos e suas características físicas e químicas durante o armazenamento em temperatura ambiente e a 11ºC. O uso 1-MCP, independentemente das três concentrações utilizadas, apresenta grande benefício na conservação pós-colheita dos frutos em condição ambiente, aumentando o período de vida útil da mangaba, assim como o uso de armazenamento a 11ºC, os quais favoreceram a redução... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conservação; Fenóis totais; Hancornia speciosa; Pós-colheita. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452011000500024 |
| |
|
|
| Fante,Camila Argenta; Boas,Ana Carolina Vilas; Costa,Adriano Carvalho; Silva,Edson Pablo; Oliveira,Marcelo Caetano de; Lima,Luiz Carlos de Oliveira. |
| O objetivo deste estudo foi verificar o efeito de doses específicas do composto 1-metilciclopropeno (1-MCP), após a colheita, nos aspectos fisiológicos e na qualidade físico-química de maçãs Eva durante o armazenamento refrigerado. Após a aplicação dos tratamentos com diferentes doses de 1-MCP (0, 10, 50, 100 e 500mg L-1), os frutos foram armazenados em câmara fria 0,5°C (±0,5) por até 135 dias. O armazenamento refrigerado juntamente com a aplicação de 1-MCP resultou em uma menor produção de etileno, principalmente nos frutos tratados com as doses de 10, 50 e 100mg L-1. O grupo controle perdeu 45% de sua firmeza, enquanto os grupos tratados perderam, em média, 27% de sua firmeza. O parâmetro C de cor identificou frutos com cor mais intensa aos 135 dias de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Qualidade; Etileno; Taxa respiratória. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013001200004 |
| |
|
|
| Brito,Giovani Greigh de; Ferreira,Alexandre Cunha de Barcellos; Borin,Ana Luiza Dias Coelho; Morello,Camilo de Lelis. |
| Biotic and abiotic stresses can alter the hormone balance and trigger the activation of pathways involved in the cotton stress responses, resulting in the abscission of squares, flowers and young bolls and consequent reductions in the seed cotton yield and fiber yield. As part of the mechanism that primarily regulates the protective response of plants against stresses, ethylene is considered a key hormone involved in this response, and increased ethylene synthesis has been observed when plants are subjected to stress. Thus, the development of strategies aimed to mitigate their negative effects can reduce the shed rate of reproductive structures and positively impact cotton productivity. For this purpose, 1-methylcyclopropene (1-MCP), a compound that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: AVG; 1-MCP; Ethylene; Gossypium hirsutum. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542013000100001 |
| |
|
|
| Moretti,Celso Luiz; Araújo,Alessandra L.; Marouelli,Waldir Aparecido; Silva,Washington Luiz C.. |
| Tomato (Lycopersicon esculentum Mill.) fruits, cv. Santa Clara, were harvested at the breaker stage from commercial fields in Brazlândia, Brazil, to investigate the ability of 1-methylcyclopropene (1-MCP) to retard tomato fruit ripening. Fruit without external blemishes were graded for size (diameter = 80±5 mm) and mass (m = 130±10 g), placed inside hermetically sealed boxes, and 1-MCP was applied for 12 hours (T = 22±1°C; RH = 80-85%) at four different concentrations: 0 (control), 250, 500 and 1000 mL.L-1. Fruits were held at ambient conditions (T = 23±2°C; RH 80-85%) for 2 days and then stored inside a cold room (T = 20±1°C; RH = 85-95%). Every 3 days, during a 15-day period, fruits were analyzed for firmness, total soluble solids, titratable acidity,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lycopersicon esculentum; Acidity; Color; Carotenoids; Ethylene; Firmness; Postharvest. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362002000400030 |
| |
|
|
| Thewes,Fabio Rodrigo; Both,Vanderlei; Brackmann,Auri; Ferreira,Daniele de Freitas; Wagner,Roger. |
| ABSTRACT: Apple volatile aroma depends of complex interaction among organic compounds. The aim of the present study was to evaluate the effect of 1-methylcyclopropene (1-MCP) application on volatile profile and quality on 'Royal Gala' apples produced in Southern Brazil and stored under controlled atmosphere condition (CA; 1.0kPa O2+1.2kPa CO2; 0.5±0.1°C; 94±1% relative humidity). Volatile profile was determined after eight month of CA storage plus 7 days of shelf life via solid-phase microextraction (HS-SPME) and analyzed by gas chromatography coupled to mass spectrometer. In the volatile profile were identified 8 esters, 11 alcohols, 6 aldehydes, 6 acids, 2 ketones, 1 ether and 1 terpene. 1-MCP application reduced significantly the main volatile compounds... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Malus domestica; Solid phase microextraction; Fruits; GC/MS. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015001202259 |
| |
|
|
| Edagi,Fernando Kazuhiro; Sasaki,Fabiana Fumi; Sestari,Ivan; Terra,Felipe de Angelis Monteiro; Giro,Beatriz; Kluge,Ricardo Alfredo. |
| Este trabalho teve como objetivo verificar o efeito da aplicação de 1-metilciclopropeno (1-MCP) e do salicilato de metila (MeSA) no controle de injúrias pelo frio em nêsperas 'Fukuhara'. Quatro concentrações de 1-MCP foram aplicadas (0, 50, 500 e 5000nL L-1), além do MeSA (0,01mM), associado ou não ao 1-MCP 500nL L-1. Após os tratamentos os frutos foram armazenados a 1°C durante 60 dias. As determinações realizadas foram: firmeza de polpa, índice de escurecimento e podridão, acidez titulável, pH, teor de sólidos solúveis, teor de ácido ascórbico e atividade da enzima polifenoloxidase (PPO). Após 60 dias de armazenamento refrigerado, não foi observado desenvolvimento de escurecimento interno nos frutos tratados com 1-MCP e MeSA. Os frutos controle... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eriobotrya japonica; Escurecimento interno; Conservação; Armazenamento refrigerado. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000500029 |
| |
|
|
| Sanches, Alex Guimarães; Silva, Maryelle Barros da; Moreira, Elaine Gleice Silva; Costa, Jaqueline Macedo. |
| A vida útil pós-colheita do taperebá é muito curta mesmo em condições de refrigeração, assim o presente trabalho tem por objetivo avaliar a influência de diferentes concentrações de 1–metilciclopropeno (MCP) sobre a conservação e preservação da qualidade deste fruto visando maior tempo de comercialização na forma in natura. Adotou-se um delineamento experimental inteiramente casualizado em arranjo fatorial 4x5 com cinco repetições. A cada três dias os frutos de cada tratamento foram avaliados quanto à perda de massa fresca, firmeza da polpa, pH, o conteúdo de sólidos solúveis, teor de vitamina C, acidez titulável, índice de maturação e taxa respiratória. Os resultados demonstraram efeito significativo em todas as características avaliadas tanto no tempo de... |
| Tipo: Info:eu-repo/semantics/article |
|
| Ano: 2017 |
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/1398 |
| |
|
|
| Linhares,Natália Duarte; Freire,Maíra Cristina Menezes; Cardenas,Raony Guimarães Corrêa do Carmo Lisboa; Pena,Heloisa Barbosa; Lachlan,Katherine; Dallapiccola,Bruno; Bacino,Carlos; Delobel,Bruno; James,Paul; Thuresson,Ann-Charlotte; Annerén,Göran; Pena,Sérgio D. J.. |
| Abstract Deletion-induced hemizygosity may unmask deleterious autosomal recessive variants and be a cause of the phenotypic variability observed in microdeletion syndromes. We performed complete exome sequencing (WES) analysis to examine this possibility in a patient with 1p13.2 microdeletion. Since the patient displayed clinical features suggestive of Noonan Syndrome (NS), we also used WES to rule out the presence of pathogenic variants in any of the genes associated with the different types of NS. We concluded that the clinical findings could be attributed solely to the 1p13.2 haploinsufficiency. Retrospective analysis of other nine reported patients with 1p13.2 microdeletions showed that six of them also presented some characteristics of NS. In all... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 1p13.2 deletion; Noonan syndrome type 6; NRAS gene; RASopathy; Unmasking heterozygosity. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572016000300349 |
| |
|
| |
|
|
| GONÇALVES,MARIA DA CONCEIÇÃO R.; MIRANDA NETO,MANOEL; CAVALCANTE,ISA G.M.; SEBADELHE,VITTÓRIA R.R.J.; SOUZA,MICHELE F. De; NEVES,JULIANA P.R.; SOUZA,FLAVIA T.L. DE; TAVARES,RENATA L.; COSTA,MATHEUS S.; SILVA,ALEXANDRE S.. |
| Abstract Given the scarcity of studies with elderly and the existence of studies investigating the effect of vitamin D supplementation in PEH (post exercise hypotension), this study evaluated the effect of a single megadose of vitamin D on resting blood pressure (RBP) and post-exercise hypotension (PEH) in the elderly. 11 hypertensive elderly women (70.3 ± 1.7 years) received a single megadose of 200.000 IU of cholecalciferol or a placebo, orally, through capsules. On day 7, the subjects performed 30 minutes of aerobic exercise with blood pressure measurement before exercise and every 10 minutes after exercise during 60 minutes, besides cardiac autonomic modulation. RBP did not significantly change. Exercise promoted significant systolic PEH only in one... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aerobic exercise; Aged; Hypertension; Hypotension; Cholecalciferol. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652020000100903 |
| |
|
| |
|
|
| Bachega,T.A.S.S.; Billerbeck,A.E.C.; Madureira,G.; Marcondes,J.A.M.; Longui,C.A.; Leite,M.V.; Arnhold,I.J.P.; Mendonça,B.B.. |
| We determined the frequency of large rearrangements and point mutations in 130 Brazilian patients with 21-hydroxylase deficiency and correlated genotype with phenotype. The frequency of CYP21 deletions was lower (4.4%) than in most of the previous series described, whereas the frequency of large gene conversions was similar to the frequency reported in the literature (6.6%). The most frequent point mutations were I2 splice (41.8% in salt wasting - SW), I172N (32.6% in simple virilizing - SV) and V281L (40.2% in the late onset form - LO). The frequency of the nine most common point mutations was similar to that reported for other countries. The 93 fully genotyped patients were classified into 3 mutation groups based on the degree of enzymatic activity... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 21-hydroxylase deficiency; Congenital adrenal hyperplasia; Brazilian patients; CYP21 mutations; Genotype; Phenotype. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000001000011 |
| |
|
|
| MARTINEZ,PABLO D.G.; KRAKE,SUSANN H.; POGGI,MAITIA L.; CAMPBELL,SIMON F.; WILLIS,PAUL A.; DIAS,LUIZ C.. |
| ABSTRACT Combination therapy drugs are considered a fundamental way to control malaria as it mimimizes the risk of emergence of resistance to the individual partner drugs. Consequently, this type of therapy constitutes a driving force for the discovery of new drugs with different modes of action, since this will provide options for combining different drugs to achieve the optimum antimalarial treatment. In this context, a 2,3,8-trisubstitued quinoline compound was found in a high throughput screen (HTS) to show an excellent inhibition of P. falciparum NF54 (IC50 = 22 nM) and low cytotoxicity. We performed a detailed evaluation of the substituents to improve the metabolic stability and solubility liabilities of the original hit and identified derivatives... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antimalarial activity; Trisubstituted quinoline; SAR; Resistance. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000301215 |
| |
|
|
| SILVA,J.R.O.; MARQUES,J.N.R.; GODOY,C.V.C.; BATISTA,L.B.; SILVA,A.A.; RONCHI,C.P.. |
| ABSTRACT: The hormesis effect of 2,4-D, applied at two stages of soybean development, on the physiological components of crop yield, was investigated. Soybean seeds of the cultivar ‘AG 3680 IPRO’ were sown in pots containing 7 L of a substrate and kept in a greenhouse. A randomized complete block design with four replicates was used. Eighteen treatments were tested, arranged in a split-plot scheme. The plots consisted of two stages of herbicide application (V4 and V6), and the split-plots were arranged by nine 2,4-D doses (0, 5, 10, 15, 20, 25, 30, 40, and 50 g ha-1). At the time of harvest, 100 days after sowing, significant interactions between crop development stages and 2,4-D doses were observed for the number of nodes in the main stem (NNMS) and the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Auxin; Herbicide. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100154 |
| |
|
|
| Tofanelli,Mauro Brasil Dias; Freitas,Pytágoras Leal; Pereira,Giuliano Elias. |
| Viticulture is an important agricultural activity in semiarid northeastern Brazil, and the quality and ease of vine propagation are very important in this context. This study evaluated the use of 2,4-dichlorophenoxyacetic acid (2,4-D) as an alternative to indolebutyric acid (IBA) in the rooting of vine rootstock cuttings. The trial was conducted at the Universidade Federal de Sergipe (São Cristóvão-SE) between January and March 2010 with cuttings of the rootstocks of 'IAC-766', 'IAC-572', and 'Paulsen 1103' treated with 2,4-D or IBA applied at concentrations of 0, 1000, 2000, or 3000 rng-L-1 for 5 s and planted in a field on washed sand. At 56 days after planting, the percentages of rooted, sprouted, callused, and dead cuttings were evaluated, and also the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis propagation semiarid cuttings auxin 2; 4-D. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452014000300018 |
| |
|
|
| Arora,Priya; Bhardwaj,Renu; Kanwar,Mukesh Kumar. |
| The present work was undertaken to study the effects of 24-epibrassinolide (0, 10-10, 10-8 and 10-6 M) on growth (shoot length and number of leaves), protein content and activities of antioxidative enzymes [guaiacol peroxidase (EC 1.11.1.7), catalase (EC 1.11.1.6), glutathione reductase (EC 1.6.4.2), ascorbate peroxidase (EC 1.11.1.11), superoxide dismutase (EC 1.15.1.1), monodehydroascorbate reductase (EC 1.1.5.4) and dehydroascorbate reductase (EC 1.8.5.1)] in leaves of 60 days-old Brassica juncea L. plants treated with different concentrations of Cr metal. It was observed that treatment of different concentrations (0, 0.5, 1.0, 1.5 and 2.0 mM) of Cr metal alone decreased the shoot length and number of leaves and regulated the enzyme activities and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidative enzymes; Brassinosteroids; Metal toxicity. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202010000300002 |
| |
|
|
| Yemadje,Pierrot Lionel; Guibert,Hervé; Blavet,Didier; Olina,Jean-Paul; Chevallier,Tiphaine; Deleporte,Philippe; Bernoux,Martial. |
| Soil respiration is a major component of the global carbon cycle which links ecosystems and the atmosphere. To evaluate the reaction of soil respiration after wetting, during a dry period, soil respiration and associated environmental factors were measured over a 24-h period, during the dry season in North Cameroon after wetting the soil. Over 24-h, soil respiration rates followed a quadratic curve during the day coming close to linear at night, while soil temperature and moisture together explained at least 73 % of the variations during the 24-h observed. These soil respiration rates increased during the morning, peaked between 11h00 and 13h00 and then decreased gradually to the minimum around 06h00. These observations were used to propose a method for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diel soil respiration; Soil temperature; Soil moisture. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000500452 |
| |
|
| |
| Registros recuperados: 98.244 | |
|
|
|
